And he takes $5 off his health insurance deductible for every 30-minute workout. Rubin has to be at a GPS-confirmed gym or connect through a device like Fitbit. If he does not exercise three times each week, Rubin will lose $5 for every workout he misses. That’s the pact Rubin signed, and offers his employees, through a company called Pact Health.

In Inside the Box, veteran journalist and marathoner T.J. Murphy goes all in to expose the gritty, high-intensity sport of CrossFit®. From staggering newcomer to evangelist, Murphy finds out how it feels, why it’s so popular, and whether CrossFit can fix his broken body.